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2008 Mazda 3 S 2.3L Idle fault
Posted to Asian Driveability on 6/21/2013 2 Replies

This Mazda will have no throttle response and MIL light on with P0638 and P2112. When put into gear engine will shake badly with #2 & 3 coils not firing. During testing I found the PCM not grounding the drive by wire relay(ETV). Tested the wiring from PCM to r...

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  Related Documents & Media  2008 Mazda 3 S

 
Message Closed w/FIX

car Vehicle Data

2008 Mazda 3 S

VIN JM1BK34428
Engine2.3 L / 4 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / MPFI
EmissionsOBD-II Compliant
SymptomsIdle Fault
OccursAlways

Trouble Codes

P0638Electronic Throttle Control (EGR Airflow Control Valve) Performance - Bank 1
P2112Electronic Throttle Control - Unable To Open
Message Closed w/FIX

car Vehicle Data

2008 Mazda 3 S

VIN JM1BK34428
Engine2.3 L / 4 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / MPFI
EmissionsOBD-II Compliant
SymptomsIdle Fault
OccursAlways

Trouble Codes

P0638Electronic Throttle Control (EGR Airflow Control Valve) Performance - Bank 1
P2112Electronic Throttle Control - Unable To Open